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[Bug binutils/26510] UBSAN error: gas/config/tc-z8k.c:1191:19:

From: cvs-commit at gcc dot gnu.org
Subject: [Bug binutils/26510] UBSAN error: gas/config/tc-z8k.c:1191:19:
Date: Mon, 31 Aug 2020 11:00:40 +0000


--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot 
gnu.org> ---
The master branch has been updated by Alan Modra <amodra@sourceware.org>:


commit 06de2e0da24a0f0fdc9b38f8308ec909453c4ee8
Author: Alan Modra <amodra@gmail.com>
Date:   Mon Aug 31 17:34:39 2020 +0930

    PR26510 UBSAN: tc-z8k.c left shift of negative value

    This also fixes the packing of the nibble buffer, which contains
    rubbish in the top 4 bits of each element.

            PR 26510
            * config/tc-z8k.c (buffer): Use unsigned char.
            (apply_fix): Use unsigned char* pointers.
            (build_bytes): Likewise and mask nibbles when packing.

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